code: def pickle_traceback(tb):
      return unpickle_traceback, (
          Frame(tb.tb_frame),
          tb.tb_lineno,
          tb.tb_next and Traceback(tb.tb_next),
      )
  
file_path: mars/mars/lib/tblib/pickling_support.py
imports: import sys
  from types import TracebackType
  from .None import Frame
  from .None import Traceback
label_desc: Use image node_id 2 for calling a global function with example usage: pickle_traceback(tb) and returns: unpickle_traceback,  Frame,  tb,  unknown